<template>
  <a-layout-header :class="[headerTheme, 'admin-header']">
    <div :class="['admin-header-wide', layout, pageWidth]">
      <router-link v-if="isMobile || layout === 'head'"
                   to="/"
                   :class="['logo', isMobile ? null : 'pc', headerTheme]">
        <img width="32"
             src="@/assets/img/logo.png" />
        <h1 v-if="!isMobile">{{systemName}}</h1>
      </router-link>
      <a-divider v-if="isMobile"
                 type="vertical" />
      <a-icon v-if="layout !== 'head'"
              class="trigger"
              :type="collapsed ? 'menu-unfold' : 'menu-fold'"
              @click="toggleCollapse" />
      <div v-if="layout !== 'side' && !isMobile"
           class="admin-header-menu"
           :style="`width: ${menuWidth};`">
        <i-menu class="head-menu"
                :theme="headerTheme"
                mode="horizontal"
                :options="menuData"
                @select="onSelect" />
      </div>
      <div :class="['admin-header-right', headerTheme]">
        <header-avatar class="header-item" />
      </div>
    </div>
  </a-layout-header>
</template>

<script>
import HeaderAvatar from './HeaderAvatar'
import IMenu from '@/components/menu/menu'
import { mapState, mapMutations } from 'vuex'

export default {
  name: 'AdminHeader',
  components: { IMenu, HeaderAvatar },
  props: ['collapsed', 'menuData'],
  data () {
    return {
      langList: [
        { key: 'CN', name: '简体中文', alias: '简体' },
        { key: 'HK', name: '繁體中文', alias: '繁體' },
        { key: 'US', name: 'English', alias: 'English' }
      ],
      searchActive: false
    }
  },
  computed: {
    ...mapState('setting', ['theme', 'isMobile', 'layout', 'systemName', 'lang', 'pageWidth']),
    headerTheme () {
      if (this.layout == 'side' && this.theme.mode == 'dark' && !this.isMobile) {
        return 'light'
      }
      return this.theme.mode
    },
    langAlias () {
      let lang = this.langList.find(item => item.key == this.lang)
      return lang.alias
    },
    menuWidth () {
      const { layout, searchActive } = this
      const headWidth = layout === 'head' ? '100% - 188px' : '100%'
      const extraWidth = searchActive ? '600px' : '400px'
      return `calc(${headWidth} - ${extraWidth})`
    }
  },
  methods: {
    toggleCollapse () {
      this.$emit('toggleCollapse')
    },
    onSelect (obj) {
      this.$emit('menuSelect', obj)
    },
    ...mapMutations('setting', ['setLang'])
  }
}
</script>

<style lang="less" scoped>
@import "index";
</style>
